Atomera Inc
ATOM- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001420520
In the last 90 days, Atomera Inc insiders filed 0 open-market purchases and 5 sales; 121 institutions reported holding it in 13F filings for Q2 2026, worth $181.8M in total; no superinvestor holds it.
Holders of 5% or more of ATOM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Atomera Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G | 5.60%1.72M shares | New | Jul 17, 20251 filing | Jul 17, 2025 | SEC |
| Vanguard Group Inc | 13G | 5.27%1.62M shares | New | Jul 29, 20251 filing | Jul 29, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Atomera Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 29, 202511:23 AM ET | Vanguard Group Inc | 13G | 5.27%1.62M shares | New | Jun 30, 2025 | SEC |
| Jul 17, 20257:44 PM ET | BlackRock, Inc. | 13G | 5.60%1.72M shares | New | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Atomera Inc shares.
No Form 144 notices for Atomera Inc are on file.